Transcriptomic responses of lung mesenchymal cells during pneumonia

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Veröffentlicht in:JCI Insight vol. 10, no. 7 (Apr 2025)
1. Verfasser: Soucy, Alicia M
Weitere Verfasser: Brune, Jourdan E, Jayaraman, Archana, Shenoy, Anukul T, Korkmaz, Filiz T, Etesami, Neelou S, Hiller, Bradley E, Ian M.C. Martin, Goltry, Wesley N, Ha, Catherine T, Crossland, Nicholas A, Campbell, Joshua D, Beach, Thomas G, Traber, Katrina E, Jones, Matthew R, Quinton, Lee J, Bosmann, Markus, Frevert, Charles W, Mizgerd, Joseph P
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American Society for Clinical Investigation
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022 |a 2379-3708 
024 7 |a 10.1172/jci.insight.177084  |2 doi 
035 |a 3256005325 
045 2 |b d20250401  |b d20250430 
100 1 |a Soucy, Alicia M 
245 1 |a Transcriptomic responses of lung mesenchymal cells during pneumonia 
260 |b American Society for Clinical Investigation  |c Apr 2025 
513 |a Journal Article 
520 3 |a The role of mesenchymal cells during respiratory infection is not well defined, including whether, which, and how the different types of mesenchymal cells respond. We collected all mesenchymal cells from lung single-cell suspensions of mice that were naive (after receiving only saline vehicle), pneumonic (after intratracheal instillation of pneumococcus 24 hours previously), or resolved from infection (after nonlethal pneumococcal infections 6 weeks previously) and performed single-cell RNA sequencing. Cells clustered into 5 well-separated groups based on their transcriptomes: matrix fibroblasts, myofibroblasts, pericytes, smooth muscle cells, and mesothelial cells. Fibroblasts were the most abundant and could be further segregated into Pdgfra+Npnt+Ces1d+Col13a1+ alveolar fibroblasts and Cd9+Pi16+Sca1+Col14a1+ adventitial fibroblasts. The cells from naive and resolved groups overlapped in dimension reduction plots, suggesting the mesenchymal cells returned to baseline transcriptomes after resolution. During pneumonia, all mesenchymal cells responded with altered transcriptomes, revealing a core response that had been conserved across cell types as well as distinct mesenchymal cell type–specific responses. The different subsets of fibroblasts induced similar gene sets, but the alveolar fibroblasts responded more strongly than the adventitial fibroblasts. These data demonstrated diverse and specialized immune activities of lung mesenchymal cells during pneumonia. 
653 |a Infections 
653 |a Transcriptomes 
653 |a Neutrophils 
653 |a Pneumonia 
653 |a Cell suspensions 
653 |a Cytokines 
653 |a Leukocytes 
653 |a Trachea 
653 |a Fibroblasts 
653 |a Smooth muscle 
653 |a Transcriptomics 
653 |a Genomics 
653 |a Alveoli 
653 |a Genes 
653 |a Respiratory tract infection 
653 |a Lungs 
653 |a Pattern recognition 
653 |a Cells 
653 |a Ataxin 
653 |a Mesenchyme 
653 |a Immune response 
653 |a CD9 antigen 
653 |a Pericytes 
700 1 |a Brune, Jourdan E 
700 1 |a Jayaraman, Archana 
700 1 |a Shenoy, Anukul T 
700 1 |a Korkmaz, Filiz T 
700 1 |a Etesami, Neelou S 
700 1 |a Hiller, Bradley E 
700 1 |a Ian M.C. Martin 
700 1 |a Goltry, Wesley N 
700 1 |a Ha, Catherine T 
700 1 |a Crossland, Nicholas A 
700 1 |a Campbell, Joshua D 
700 1 |a Beach, Thomas G 
700 1 |a Traber, Katrina E 
700 1 |a Jones, Matthew R 
700 1 |a Quinton, Lee J 
700 1 |a Bosmann, Markus 
700 1 |a Frevert, Charles W 
700 1 |a Mizgerd, Joseph P 
773 0 |t JCI Insight  |g vol. 10, no. 7 (Apr 2025) 
786 0 |d ProQuest  |t Health & Medical Collection 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/3256005325/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text  |u https://www.proquest.com/docview/3256005325/fulltext/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/3256005325/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch